parse nested json without creating class using java

JsonParser.java

//<dependency>
	//<groupId>com.fasterxml.jackson.core</groupId>
	//<artifactId>jackson-databind</artifactId>
	//<version>2.13.0-rc1</version>
//</dependency>

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;

public class JsonParser {
  
	public static void main(String[] args) throws JsonMappingException, JsonProcessingException {
		
		String texto = "{\r\n"
				+ "   \"msg\":\"Autenticacao realizada com sucesso\",\r\n"
				+ "   \"success\":true,\r\n"
				+ "   \"validacaoAssinatura\":{\r\n"
				+ "      \"cpfConfirmado\":false,\r\n"
				+ "      \"dados\":{\r\n"
				+ "         \"cnpj\":null,\r\n"
				+ "         \"cpf\":\"11122333\",\r\n"
				+ "         \"nomeEmpresarialPJ\":null,\r\n"
				+ "         \"nomeResponsavel\":null,\r\n"
				+ "         \"numeroRegistroOAB\":null\r\n"
				+ "      },\r\n"
				+ "      \"desafioValido\":false,\r\n"
				+ "      \"documentoAttached\":true,\r\n"
				+ "      \"hashDocumentoValido\":true,\r\n"
				+ "      \"integridade\":true,\r\n"
				+ "      \"ipdesafioValido\":false,\r\n"
				+ "      \"validade\":true\r\n"
				+ "   }\r\n"
				+ "}";
	    
		JsonNode respostaJson = new ObjectMapper().readTree(texto);
		
		String cpf = respostaJson.get("validacaoAssinatura").get("dados").get("cpf").asText();
		
		System.out.println(cpf);
		
	}
}